// Get raw lamports which includes rent
let sol_escrow_lamports = sol_escrow.lamports();

// Ensure real sol reserves are equal to bonding curve pool lamports 
if sol_escrow_lamports < bonding_curve.real_sol_reserves {
    msg!(
        "real_sol_r:{}, bonding_lamps:{}",
        bonding_curve.real_sol_reserves,
        sol_escrow_lamports
    );
    msg!("Invariant failed: real_sol_reserves != bonding_curve_pool_lamports");
    return Err(ContractError::BondingCurveInvariant.into());
}
// let rent_exemption_balance: u64 =
//     Rent::get()?.minimum_balance(8 + BondingCurve::INIT_SPACE as usize);
// let bonding_curve_pool_lamports: u64 = lamports - rent_exemption_balance;
